CN106515407A - Electric vehicle drive axle driven by two motors for speed regulation - Google Patents
Electric vehicle drive axle driven by two motors for speed regulation Download PDFInfo
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- CN106515407A CN106515407A CN201611025000.2A CN201611025000A CN106515407A CN 106515407 A CN106515407 A CN 106515407A CN 201611025000 A CN201611025000 A CN 201611025000A CN 106515407 A CN106515407 A CN 106515407A
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- motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an electric vehicle drive axle by two motors for speed regulation. A main resolver, the main motor, a planetary gear train, a differential mechanism and a speed regulation resolver are coaxially connected between two vehicle wheels in sequence; the differential mechanism is coaxially sleeved with the speed regulation motor; the main motor is connected with one vehicle wheel through a left axle housing; the two ends of the speed regulation motor are connected with the planetary gear train and the speed regulation resolver correspondingly; and the speed regulation resolver is connected with the other vehicle wheel through a right axle housing. The planetary gear train comprises a center wheel, four planet wheels, an inner tooth ring and a planetary carrier; and the four planet wheels are evenly distributed on the outer side of the center wheel and the inner side of the inner tooth ring through the planetary carrier, the planetary carrier is connected with the main motor, the center wheel is connected with the differential mechanism, and the inner tooth ring is connected with the speed regulation motor. According to the electric vehicle drive axle, the two motors work alternately or output torque according to different combining forms, the best control strategy is adopted, the electric vehicle drive axle can adapt to various complex driving conditions at the smallest energy consumption, and the energy utilization rate of an electric vehicle is greatly increased.
Description
Technical field
The invention belongs to AE field, and in particular to a kind of electric motor car driving bridge of Dual-motors Driving speed governing.
Background technology
The mixing of oily electricity, air-fuel mixture, pure electric automobile etc. are greatly developed, especially large-scale pure Electric Transit, sightseeing are electronic
Vehicle, for greatly improving urban traffic blocking, reduce motor vehicle emission, improve environmental sanitation, reduce the aspects such as noise and all have
Very prominent advantage, has become one of strategic important goal of China's new-energy automobile development.
Compared with explosive motor automobile, electric automobile is limited to the tired of the defects such as continual mileage is short, charging is slow for a long time
Disturb, but it have zero-emission, the outstanding advantage such as energy source is extensive, driving power is high, acceleration is good, especially with
That being becoming tight day for Global Oil resource provision is increasingly serious with greenhouse effect, electric automobile has welcome the fast-developing phase.
Research with regard to electric automobile at present is concentrated mainly on new battery material, new battery types, new battery charging and discharging
The many-side such as the control technology of control technology, motor technology and motor, energy management and control, electric automobile chassis.Realize electricity
The perfect adaptation of electrical automobile motor, drive control and electric automobile chassis technology, also becomes modern Development of Electric Vehicles
Important goal.
Supply, transmission, speed change, differential and commutation that the subject matter for solving is power are needed in electric automobile chassis
Deng including in several electric automobile type of drive for being currently in research and ripe application：One is In-wheel motor driving mode,
The wheel hub motor mode of widely used two-wheeled electric motorcycle, realizes real " zero biography in terms of power supply and transmission
It is dynamic ", for the power arrangement of transmission control and car load is with obviously advantage, in two-wheel drive even all-wheel drive
The important research direction that this wheel hub motor technology has become modern electric automobile is used for reference in electric automobile, while and can produce
The puzzlement of the problems such as synchronization of the life between different driving wheel or differential.
Two is to drive to different drives using single Motor drive, Jing main reducing gear speed changes, commutation, then Jing differential mechanisms, semiaxis etc.
The electric automobile type of drive of motor car wheel, this is also the conventional solution of current miniature, small-sized electric vehicle, implements ratio
It is more convenient.The defect the such as but power that there is also motor is big, high energy consumption, car load continual mileage is short.
The content of the invention
It is an object of the invention to provide a kind of electric motor car driving bridge of Dual-motors Driving speed governing, adapts to many with minimum energy consumption
The driving cycle of complex working condition is planted, the capacity usage ratio of electric automobile is greatly improved.
The technical solution adopted in the present invention is, a kind of electric motor car driving bridge of Dual-motors Driving speed governing, two wheels it
Between be sequentially coaxially connected with it is main rotation changes, mair motor, planet circular system, differential mechanism, speed governing rotation change, speed governing is coaxially socketed with outside differential mechanism
Motor, mair motor are connected by left axle housing with one of wheel, and the two ends of buncher are revolved with planet circular system and speed governing respectively
Become connection, speed governing rotation change is connected by right axle housing with another wheel；Wherein, planet circular system include centre wheel, four planetary gears,
Ring gear and planet carrier；Four planetary gears are distributed on the outside of centre wheel and the inner side of ring gear, planet carrier and master by planet carrier
Motor connection, centre wheel are connected with differential mechanism, and ring gear is connected with buncher.
The characteristics of of the invention, also resides in：
Mair motor includes main motor shaft, and mair motor rotor is circumferentially fixed on main motor shaft by key, and main motor shaft passes through
Bearing is connected to mair motor left cover and mair motor right cover, and mair motor left cover and mair motor right cover are bolted in main electricity
The two ends of casing, main motor stator are scheduled in the endoporus of mair motor shell by keying, one end arrangement planet carrier of main motor shaft, main
Motor shaft is fixedly connected with planet carrier, and the other end of main motor shaft is connected with main rotation change.
Differential mechanism includes differential carrier, and differential carrier is divided into left and right two parts, and left half and the centre wheel of differential carrier connect
Connect, the right half of differential carrier is connected with right axle housing by bearing, is packaged with cross axle between the two-part differential carrier in left and right,
One bevel gear, two axle shaft gears or so are respectively housed to be mounted opposite the two of four bevel gears on four bifurcateds of cross axle
End, one of axle shaft gear are connected with one of wheel by the left half axle through main motor shaft, another axle shaft gear
It is connected with another wheel by right axle shaft.
Buncher includes buncher rotor and buncher stator, and left end and the ring gear of buncher rotor connect
Connect, buncher stator, the right-hand member of buncher rotor are connected with speed governing rotation change.
Speed governing rotation becomes includes that speed governing rotation becomes rotor and speed governing rotation becomes stator, and speed governing rotation is become rotor and connected with buncher rotor
Connect, speed governing rotation is become stator, buncher stator and is connected with right axle housing.
Main rotation becomes includes that main rotation becomes rotor and main rotation becomes stator, and main rotation becomes rotor and mair motor rotor coaxial and main motor shaft
Connection, main rotation are become stator and are connected with mair motor left cover.
The invention has the beneficial effects as follows：A kind of electric motor car driving bridge of Dual-motors Driving speed governing of the present invention, is watched by motor
The different control strategies for taking drive control device realize co-operation or the timesharing operating of mair motor and buncher, by planet
Mair motor, buncher and differential mechanism are linked together by train, realize that the less motor of two design powers carries out timesharing work(
Rate is exported or combined power output, to adapt to different driving cycles, reducing energy consumption, reduction heating can be damaged to greatest extent
Consumption；The functions such as acceleration, reversing, advance and the braking of electric automobile are realized by the speed governing of two motors, commutation, braking；This
It is bright to make full use of planet circular system to realize the transmission of mair motor, buncher and differential mechanism and deceleration speed changing function, by two motors
With the direct-connected straight drive of differential mechanism, the connecting elements such as shaft coupling, power transmission shaft are eliminated, reduce quantity, the volume of housing, reduce
The quantity of bearing, bolt and sealing member, reduces the power attenuation of power transmission, simplifies drive mechanism.
Description of the drawings
Fig. 1 is a kind of structural representation of the electric motor car driving bridge of Dual-motors Driving speed governing of the invention；
Fig. 2 is a kind of fundamental diagram of Dual-motors Driving speed governing of the invention.
In figure, 1. mair motor, 1-1. main motor stators, 1-2. mair motor rotors, 1-3. mair motor shells, 1-4. mair motors are left
Lid, 1-5. mair motor right covers, 1-6. main motor shafts,
2. planet circular system, 2-1. centre wheels, 2-2. planet carriers, 2-3. planetary gears, 2-4. ring gears,
3. differential mechanism, 3-1. cross axles, 3-2. bevel gears, 3-3. differential carriers, 3-4. axle shaft gears,
4. main rotation becomes, and the main rotations of 4-1. become rotor, and the main rotations of 4-2. become stator,
5. buncher, 5-1. buncher rotors, 5-2. buncher stators,
6. speed governing rotation becomes, and 6-1. speed governing rotation becomes stator, and 6-2. speed governing rotation becomes rotor,
7. left axle housing, 8. left half axle, 9. wheel, 10. right axle housing, 11. right axle shafts.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of electric motor car driving bridge of Dual-motors Driving speed governing of the present invention, structure as shown in Figure 1, 2, between two wheels 9
Sequentially coaxially it is connected with main rotation and becomes 4, mair motor 1, planet circular system 2, differential mechanism 3, speed governing rotation change 6, differential mechanism 3 is outer is coaxially socketed with
Buncher 5, mair motor 1 are connected by left axle housing 7 with one of wheel 9, the two ends of buncher 5 respectively with planet circular system
2 and speed governing rotation become 6 and connect, speed governing rotation is become and 6 is connected by right axle housing 10 with another wheel 9.
Mair motor 1 and buncher 5 are coaxially arranged in juxtaposition, and adopt inner rotor type motor；Main rotation becomes 4 and buncher
5 both sides for being arranged in mair motor 1, speed governing rotation become 6 right sides for being arranged in buncher 5, and differential mechanism 3 is embedded in buncher 5
It is internal.
Wherein, planet circular system 2 includes centre wheel 2-1, four planetary gear 2-3, ring gear 2-4 and planet carrier 2-2；Planet carrier
Four planetary gear 2-3 are distributed on 2-2 the outside of centre wheel 2-1 and the inner side of ring gear 2-4, and planet carrier 2-2 is connected with mair motor 1
Connect, centre wheel 2-1 is connected with differential mechanism 3, ring gear 2-4 is connected with buncher 5.
Mair motor 1 includes main motor shaft 1-6, and mair motor rotor 1-2 is circumferentially fixed on main motor shaft 1-6 by key, main
Motor shaft 1-6 is connected to mair motor left cover 1-4 and mair motor right cover 1-5, mair motor left cover 1-4 and mair motor by bearing
Right cover 1-5 is bolted at the two ends of mair motor shell 1-3, and main motor stator 1-1 is scheduled on mair motor shell 1-3's by keying
In endoporus, one end arrangement planet carrier 2-2 of main motor shaft 1-6, main motor shaft 1-6 are fixedly connected with planet carrier 2-2, main motor shaft
The other end of 1-6 becomes 4 with main rotation and is connected.
Differential mechanism 3 includes that differential carrier 3-3, differential carrier 3-3 divide for left and right two parts, the left half of differential carrier 3-3
It is connected with centre wheel 2-1, the right half of differential carrier 3-3 is connected with right axle housing 10 by bearing, the two-part differential mechanism in left and right
Cross axle 3-1 is packaged between shell 3-3, a bevel gear 3-2, two half axle gears are respectively housed on four bifurcateds of cross axle 3-1
Wheel 3-4 or so is mounted opposite at the two ends of four bevel gear 3-2, and one of axle shaft gear 3-4 is by passing through main motor shaft 1-6
Left half axle 8 be connected with one of wheel 9, another axle shaft gear 3-4 is connected with another wheel 9 by right axle shaft 11,
I.e. two wheels 9 are connected with two axle shaft gear 3-4 of differential mechanism 3 respectively through left half axle 8 and right axle shaft 11.
Buncher 5 includes buncher rotor 5-1 and buncher stator 5-2, the left end of buncher rotor 5-1 with
Ring gear 2-4 connects, and buncher stator 5-2, the right-hand member of buncher rotor 5-1 become 6 with speed governing rotation and be connected.
Speed governing rotation becomes 6 includes that speed governing rotation becomes rotor 6-2 and speed governing rotation becomes stator 6-1, and speed governing rotation becomes rotor 6-2 with speed governing electricity
Machine rotor 5-1 connects, and speed governing rotation is become stator 6-1, buncher stator 5-2 and is connected with right axle housing 10.
Main rotation becomes 4 includes that main rotation becomes rotor 4-1 and main rotation becomes stator 4-2, and main rotation becomes rotor 4-1 and mair motor rotor 1-2
Coaxially it is connected with main motor shaft 1-6, main rotation is become stator 4-2 and is connected with mair motor left cover 1-4.
Main motor stator 1-1, main rotation become stator 4-1, buncher stator 5-2, speed governing rotation change stator 6-2 and pass through left axle housing
7 and right axle housing 10 be connected with vehicle frame, relative frame is fixed.
In a kind of electric motor car driving bridge of Dual-motors Driving speed governing of the present invention,
Main rotation becomes 4 and the composition servo mair motor system of mair motor 1, realizes speed governing and commutation by servo drive controller；
Speed governing rotation becomes 6 and the composition servo buncher system of buncher 5, realizes speed governing again by servo drive controller and changes
To.
The power of mair motor 1 is larger, power demand design when normally using according to electric automobile；The work(of buncher 5
Rate is less, and the power sum of mair motor 1 and buncher 5 uses power in operating modes such as climbing, acceleration, trailers according to electric automobile
Design.
A kind of operation principle of the electric motor car driving bridge of Dual-motors Driving speed governing of the present invention is：Using planet circular system 2 by work(
The different mair motor 1 of rate and buncher 5 are joined together as motor；The power of mair motor 1 is directly output to planetary gear
It is the planet carrier 2-2 in 2, the ring gear 2-4 of the power output to planet circular system 2 of buncher 5, the center in planet circular system 2
Wheel 2-1 is directly connected with differential mechanism 3；The power of mair motor 1 is larger, for meeting the power demand in normal driving process；Adjust
5 power of speed motor is less, as the margin of power of car load, be adapted to when worked with mair motor 1 simultaneously car load accelerate, climbing,
The complex working conditions such as trailer.
Wherein main rotation becomes 4 servo electrical machinery systems formed with mair motor 1, with watching that speed governing rotation change 6 and buncher 5 are formed
Buncher system is taken, start and stop, speed governing and the rotating of mair motor 1 and buncher 5 can be realized by drive control device,
And the collaborative work of mair motor 1 and buncher 5 arranges special control system and control strategy to realize.
A kind of course of work of the electric motor car driving bridge of Dual-motors Driving speed governing of the present invention is：
Mair motor rotor 1-2 is joined directly together with the planet carrier 2-2 of planet circular system 2 by main motor shaft 1-6, and mair motor 1 is straight
Connected planet carrier 2-2 output power；The buncher rotor 5-1 of buncher 5 is direct with the ring gear 2-4 of planet circular system 2
It is connected, buncher 5 directly exports power by ring gear 2-4；Differential carrier 3-3 centre wheel 2-1 directly with planet circular system 2
Connection, centre wheel 2-1 are input into power to differential mechanism 3；Differential mechanism 3 is transmitted power to left half by two axle shaft gear 3-4
Axle 8 and right axle shaft 11, driving moment 9 are rotated.
When electric automobile starts, mair motor 1 is powered up and is not rotated, then the planet carrier 2-2 of planet circular system 2 is maintained static, and is adjusted
The power-up of speed motor 5 starts, and buncher rotor 5-1 drives ring gear 2-4 to rotate, power Jing ring gear 2-4, planetary gear 2-3, in
Heart wheel 2-1, differential carrier 3-3 are input into differential mechanism 3, and differential mechanism 3 is transmitted power to left half axle by two axle shaft gear 3-4
8 and right axle shaft 11, driving moment 9 is rotated, and electric automobile starts, the electric automobile after startup before normally travel always by
Buncher 5 is driven.
When electric automobile normally travel, buncher 5 is powered up and is not rotated, then the ring gear 2-4 of planet circular system 2 is fixed not
It is dynamic；The power-up operation of mair motor 1, mair motor rotor 1-2 drive planet carrier 2-2 to rotate by main motor shaft 1-6, and power is through planet
Frame 2-2, planetary gear 2-3, centre wheel 2-1, differential carrier 3-3 are input into power to differential mechanism 3, and differential mechanism 3 passes through two semiaxis
Gear 3-4 transmits power to left half axle 8 and right axle shaft 11, so as to driving moment 9 is rotated.
When electric automobile accelerates or climbs, the 5 simultaneously powered up operating of mair motor 1 and buncher, and mair motor 1 and tune
The rotation direction of speed motor 5 is identical；The power of mair motor 1 is input into from the planet carrier 2-2 of planet circular system 2, the power of buncher 5
Be input into from the ring gear 2-4 of planet circular system 2, after the superposition of two-way power Jing centre wheel 2-1, differential carrier 3-3 by power be input into
Differential mechanism 3, differential mechanism 3 are transmitted power to left half axle 8 and right axle shaft 11, so as to driving moment 9 by two axle shaft gear 3-4
Rotate.
When electric vehicle brake or waiting, operated using the power-up of buncher 5, and 1 power-off of mair motor is dragged
Dynamic idle running, now the ring gear 2-4 of the output power Jing planet circular systems 2 of buncher 5, planetary gear 2-3, planet carrier 2-2 drive
Mair motor 1 dallies, and differential mechanism 3 cannot obtain power and drive automobilism；Electric automobile need to be only given to driveaway operation again
Mair motor 1 supplies electric braking, and now the planet carrier 2-2 of planet circular system 2 is fixed, then started the start-up course of electric automobile again.
A kind of outstanding feature of the electric motor car driving bridge of Dual-motors Driving speed governing of the present invention：
First, the power sum of mair motor 1 and buncher 5 drives the power of motor phase in electric automobile with single motor
Closely, but two motors can realize time-sharing work, therefore there is obvious advantage in energy-saving square face.
2nd, two motor different dynamic output combinations are significantly carried for different driving cycles are adapted to there is provided probability
High automobile dynamic quality；Motor frequent start-stop can be greatly decreased simultaneously, extend the service life of motor.
3rd, for can also have when at least retaining a servomotor in mair motor 1 and buncher 5 close speed governing and
Energy-saving effect.
Claims (6)
1. a kind of electric motor car driving bridge of Dual-motors Driving speed governing, it is characterised in that sequentially coaxially connect between two wheels (9)
There is main rotation to become (4), mair motor (1), planet circular system (2), differential mechanism (3), speed governing rotation change (6), differential mechanism (3) is coaxially socketed with outward
Buncher (5), mair motor (1) are connected by left axle housing (7) with one of wheel (9), the two ends difference of buncher (5)
Become (6) with planet circular system (2) and speed governing rotation to be connected, speed governing rotation is become (6) and is connected by right axle housing (10) with another wheel (9)；
Wherein, planet circular system (2) includes centre wheel (2-1), four planetary gears (2-3), ring gear (2-4) and planet carriers (2-2)；
Four planetary gears (2-3) are distributed on planet carrier (2-2) outside of centre wheel (2-1) and the inner side of ring gear (2-4), planet carrier
(2-2) it is connected with mair motor (1), centre wheel (2-1) is connected with differential mechanism (3), ring gear (2-4) is connected with buncher (5).
2. a kind of electric motor car driving bridge of Dual-motors Driving speed governing according to claim 1, it is characterised in that the main electricity
Machine (1) includes main motor shaft (1-6), and mair motor rotor (1-2) is circumferentially fixed on main motor shaft (1-6) by key, mair motor
Axle (1-6) is connected to mair motor left cover (1-4) and mair motor right cover (1-5), mair motor left cover (1-4) and master by bearing
Motor right cover (1-5) is bolted at the two ends of mair motor shell (1-3), and main motor stator (1-1) is scheduled on master by keying
In the endoporus of motor casing (1-3), the planet carrier (2-2), main motor shaft (1-6) and institute are arranged in one end of main motor shaft (1-6)
State planet carrier (2-2) to be fixedly connected, the other end of main motor shaft (1-6) becomes (4) with the main rotation and is connected.
3. a kind of electric motor car driving bridge of Dual-motors Driving speed governing according to claim 2, it is characterised in that the differential
Device (3) includes differential carrier (3-3), and differential carrier (3-3) is divided into left and right two parts, the left half of differential carrier (3-3) and institute
Centre wheel (2-1) connection is stated, the right half of differential carrier (3-3) is connected with the right axle housing (10) by bearing, left and right two
Cross axle (3-1) is packaged between the differential carrier (3-3) for dividing, respectively equipped with a cone tooth on four bifurcateds of cross axle (3-1)
Wheel (3-2), two axle shaft gear (3-4) left and right are mounted opposite in the two ends of four bevel gears (3-2), one of axle shaft gear
(3-4) it is connected with one of wheel (9) by the left half axle (8) through the main motor shaft (1-6), another axle shaft gear
(3-4) it is connected with another wheel (9) by right axle shaft (11).
4. a kind of electric motor car driving bridge of Dual-motors Driving speed governing according to claim 1, it is characterised in that the speed governing
Motor (5) includes buncher rotor (5-1) and buncher stator (5-2), the left end of buncher rotor (5-1) with it is described
Ring gear (2-4) connects, and buncher stator (5-2), the right-hand member of buncher rotor (5-1) become (6) even with speed governing rotation
Connect.
5. a kind of electric motor car driving bridge of Dual-motors Driving speed governing according to claim 4, it is characterised in that the speed governing
Rotation becomes (6) and becomes stator (6-1) including speed governing rotation change rotor (6-2) and speed governing rotation, and it is electric with the speed governing that speed governing rotation becomes rotor (6-2)
Machine rotor (5-1) connects, and speed governing rotation is become stator (6-1), buncher stator (5-2) and is connected with the right axle housing (10).
6. a kind of electric motor car driving bridge of Dual-motors Driving speed governing according to claim 2, it is characterised in that the main rotation
Become (4) and become rotor (4-1) and main rotation change stator (4-2) including main rotation, main rotation becomes rotor (4-1) and the mair motor rotor (1-
2) coaxially it is connected with the main motor shaft (1-6), main rotation is become stator (4-2) and is connected with the mair motor left cover (1-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611025000.2A CN106515407A (en) | 2016-11-16 | 2016-11-16 | Electric vehicle drive axle driven by two motors for speed regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611025000.2A CN106515407A (en) | 2016-11-16 | 2016-11-16 | Electric vehicle drive axle driven by two motors for speed regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106515407A true CN106515407A (en) | 2017-03-22 |
Family
ID=58353119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611025000.2A Pending CN106515407A (en) | 2016-11-16 | 2016-11-16 | Electric vehicle drive axle driven by two motors for speed regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106515407A (en) |
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| CN107972461A (en) * | 2017-12-29 | 2018-05-01 | 聊城大学 | A kind of pure electric automobile bi-motor coupler |
| CN108980283A (en) * | 2018-08-13 | 2018-12-11 | 大连碧蓝节能环保科技有限公司 | Bore tooth mechanical differential |
| CN109624681A (en) * | 2018-12-28 | 2019-04-16 | 合肥工业大学 | A kind of double-motor power transmission system for electric car |
| CN109733209A (en) * | 2019-02-14 | 2019-05-10 | 大连碧蓝节能环保科技有限公司 | Automobile-used bipyramid tooth differential deceleration system control methods |
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| CN109733209A (en) * | 2019-02-14 | 2019-05-10 | 大连碧蓝节能环保科技有限公司 | Automobile-used bipyramid tooth differential deceleration system control methods |
| CN109733209B (en) * | 2019-02-14 | 2020-06-26 | 大连碧蓝节能环保科技有限公司 | Control method of differential speed reduction system of vehicle double-bevel gear |
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